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怎么往SetTimer的回调函数传递参数 - C/C++ - 清泛网 - 专注C/C++及内核技术
...Proc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
int wmId, wmEvent;
PAINTSTRUCT ps;
HDC hdc;
switch (message)//message就是消息号
{
case WM_COMMAND:
...
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;...
A good example for boost::algorithm::join
...g which returns a string value.Can I use join to join a vector<A> by calling ToString on each element?
– Ken Zhang
Feb 8 '18 at 2:56
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Parsing JSON using Json.net
...
You use the JSON class and then call the GetData() function.
/// <summary>
/// This class encodes and decodes JSON strings.
/// Spec. details, see http://www.json.org/
///
/// JSON uses Arrays and Objects. These correspond here to the datatypes Array...
Select statement to find duplicates on certain fields
...
http://support.microsoft.com/kb/139444
There should be a criterion for deciding how you define "first rows" before you use the approach in the link above. Based on that you'll need to use an order by clause and a sub query if needed. If you can post some sample data, it would really help.
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jQuery - select the associated label element of a input field [duplicate]
...t. Just use the for attribute of the label, as it should correspond to the ID of the element you're currently manipulating:
var label = $("label[for='" + $(this).attr('id') + "']");
However, there are some cases where the label will not have for set, in which case the label will be the parent of ...
Django Reverse with arguments '()' and keyword arguments '{}' not found
...
You have to specify project_id:
reverse('edit_project', kwargs={'project_id':4})
Doc here
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foll...
How to filter array in subdocument with MongoDB [duplicate]
...wind the list array before applying the $match so that you can filter individual elements and then use $group to put it back together:
db.test.aggregate([
{ $match: {_id: ObjectId("512e28984815cbfcb21646a7")}},
{ $unwind: '$list'},
{ $match: {'list.a': {$gt: 3}}},
{ $group: {_id:...
boost自定义composite_key_compare比较函数 - C/C++ - 清泛网 - 专注C/C++及内核技术
...include "boost/multi_index/composite_key.hpp"
#include "boost/multi_index/identity.hpp"
#include "boost/multi_index/sequenced_index.hpp"
#include "boost/multi_index/mem_fun.hpp"
using boost::multi_index_container;
using namespace boost::multi_index;
typedef char IDType[81];
struct TPara...
c++关闭按钮灰掉 - C/C++ - 清泛网 - 专注C/C++及内核技术
... 获得系统菜单CMenu *pMenu = GetSystemMenu(false); 获得关闭按钮IDUINT ID = pMenu->GetMenuItemID(pMenu->Ge...
通过系统菜单灰掉：
//获得系统菜单
CMenu *pMenu = GetSystemMenu(false);
//获得关闭按钮ID
UINT ID = pMenu->GetMenuItemID(pMenu->GetMenuItemCount()-1);
...
Postfix日常维护队列管理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...队列：
一般是先用mailq查看队列里的邮件，找到对应的id，然后用postsuper -d来删除。
例如id是0EAF3A9B 那么postsuper -d 0EAF3A9B
postsuper -d ALL 删除所有邮件
显示信件列表：postqueue -p
显示信件內容：postcat -q Queue_ID
刪除各別信件...